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annotate src/share/vm/oops/typeArrayKlass.hpp @ 3678:9482471a7dfa
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author | Peter Hofer <peter.hofer@jku.at> |
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date | Mon, 21 Nov 2011 15:54:32 +0100 |
parents | f95d63e2154a |
children | a92cdbac8b9e |
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0 | 1 /* |
1972 | 2 * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #ifndef SHARE_VM_OOPS_TYPEARRAYKLASS_HPP |
26 #define SHARE_VM_OOPS_TYPEARRAYKLASS_HPP | |
27 | |
28 #include "oops/arrayKlass.hpp" | |
29 | |
0 | 30 // A typeArrayKlass is the klass of a typeArray |
31 // It contains the type and size of the elements | |
32 | |
33 class typeArrayKlass : public arrayKlass { | |
34 friend class VMStructs; | |
35 private: | |
36 jint _max_length; // maximum number of elements allowed in an array | |
37 public: | |
38 // instance variables | |
39 jint max_length() { return _max_length; } | |
40 void set_max_length(jint m) { _max_length = m; } | |
41 | |
42 // testers | |
43 bool oop_is_typeArray_slow() const { return true; } | |
44 | |
45 // klass allocation | |
46 DEFINE_ALLOCATE_PERMANENT(typeArrayKlass); | |
481
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47 static klassOop create_klass(BasicType type, int scale, const char* name_str, |
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48 TRAPS); |
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49 static inline klassOop create_klass(BasicType type, int scale, TRAPS) { |
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50 return create_klass(type, scale, external_name(type), CHECK_NULL); |
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51 } |
0 | 52 |
53 int oop_size(oop obj) const; | |
54 int klass_oop_size() const { return object_size(); } | |
55 | |
56 bool compute_is_subtype_of(klassOop k); | |
57 | |
58 // Allocation | |
59 typeArrayOop allocate(int length, TRAPS); | |
60 typeArrayOop allocate_permanent(int length, TRAPS); // used for class file structures | |
61 oop multi_allocate(int rank, jint* sizes, TRAPS); | |
62 | |
63 // Copying | |
64 void copy_array(arrayOop s, int src_pos, arrayOop d, int dst_pos, int length, TRAPS); | |
65 | |
66 // Iteration | |
67 int oop_oop_iterate(oop obj, OopClosure* blk); | |
68 int oop_oop_iterate_m(oop obj, OopClosure* blk, MemRegion mr); | |
69 | |
70 // Garbage collection | |
71 void oop_follow_contents(oop obj); | |
72 int oop_adjust_pointers(oop obj); | |
73 | |
74 // Parallel Scavenge and Parallel Old | |
75 PARALLEL_GC_DECLS | |
76 | |
77 protected: | |
78 // Find n'th dimensional array | |
79 virtual klassOop array_klass_impl(bool or_null, int n, TRAPS); | |
80 | |
81 // Returns the array class with this class as element type | |
82 virtual klassOop array_klass_impl(bool or_null, TRAPS); | |
83 | |
84 public: | |
85 // Casting from klassOop | |
86 static typeArrayKlass* cast(klassOop k) { | |
87 assert(k->klass_part()->oop_is_typeArray_slow(), "cast to typeArrayKlass"); | |
88 return (typeArrayKlass*) k->klass_part(); | |
89 } | |
90 | |
91 // Naming | |
92 static const char* external_name(BasicType type); | |
93 | |
94 // Sizing | |
95 static int header_size() { return oopDesc::header_size() + sizeof(typeArrayKlass)/HeapWordSize; } | |
96 int object_size() const { return arrayKlass::object_size(header_size()); } | |
97 | |
98 // Initialization (virtual from Klass) | |
99 void initialize(TRAPS); | |
100 | |
101 private: | |
102 // Helpers | |
103 static klassOop array_klass_impl(typeArrayKlassHandle h_this, bool or_null, int n, TRAPS); | |
104 | |
105 #ifndef PRODUCT | |
106 public: | |
107 // Printing | |
108 void oop_print_on(oop obj, outputStream* st); | |
109 #endif | |
110 public: | |
111 const char* internal_name() const; | |
112 }; | |
1972 | 113 |
114 #endif // SHARE_VM_OOPS_TYPEARRAYKLASS_HPP |